Display
The Main display of the D613 is a 2.4-inch TFT screen capable of displaying 65K colors, which would now be considered quite limited but was adequate for basic applications and some multimedia at the time. With a screen-to-body ratio of around 35.3%, it emphasized function over aesthetics. The resolution of 240 x 320 pixels resulted in approximately 167 ppi pixel density, offering decent clarity for text and simple images. An external OLED display added utility by offering quick-glance information without engaging the main display.